JP2020164026A - Airbag device - Google Patents
Airbag device Download PDFInfo
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- JP2020164026A JP2020164026A JP2019066276A JP2019066276A JP2020164026A JP 2020164026 A JP2020164026 A JP 2020164026A JP 2019066276 A JP2019066276 A JP 2019066276A JP 2019066276 A JP2019066276 A JP 2019066276A JP 2020164026 A JP2020164026 A JP 2020164026A
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- Prior art keywords
- airbag
- vehicle
- airbag device
- expansion gas
- deforming member
- Prior art date
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- Granted
Links
- 230000001681 protective effect Effects 0.000 claims 2
- 238000010521 absorption reaction Methods 0.000 abstract description 9
- 239000007789 gas Substances 0.000 description 22
- 230000035939 shock Effects 0.000 description 10
- 208000027418 Wounds and injury Diseases 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 208000014674 injury Diseases 0.000 description 4
- 230000007704 transition Effects 0.000 description 3
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 1
- MWRWFPQBGSZWNV-UHFFFAOYSA-N Dinitrosopentamethylenetetramine Chemical compound C1N2CN(N=O)CN1CN(N=O)C2 MWRWFPQBGSZWNV-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 235000012501 ammonium carbonate Nutrition 0.000 description 1
- 239000001099 ammonium carbonate Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- ALIFPGGMJDWMJH-UHFFFAOYSA-N n-phenyldiazenylaniline Chemical compound C=1C=CC=CC=1NN=NC1=CC=CC=C1 ALIFPGGMJDWMJH-UHFFFAOYSA-N 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
- B60R21/36—Protecting non-occupants of a vehicle, e.g. pedestrians using airbags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R2021/0002—Type of accident
- B60R2021/0004—Frontal collision
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Bags (AREA)
Abstract
Description
本発明は、車両の前面側に展開するエアバッグ装置であって、特に、歩行者や二輪車の乗員（以下「歩行者等」という）を保護するためのエアバッグ装置に関する。 The present invention relates to an airbag device deployed on the front side of a vehicle, and more particularly to an airbag device for protecting a pedestrian or a occupant of a two-wheeled vehicle (hereinafter referred to as "pedestrian or the like").
従来から、歩行者等が車両に衝突した際には、車両のフロントピラーの前面側にエアバッグを展開させて膨張させたり（例えば、特許文献１参照）、バンパの前面側にエアバッグを展開させて膨張させたりして（例えば、特許文献２参照）、歩行者等を保護するエアバッグ装置が知られている。 Conventionally, when a pedestrian or the like collides with a vehicle, the airbag is deployed and expanded on the front side of the front pillar of the vehicle (see, for example, Patent Document 1), or the airbag is deployed on the front side of the bumper. There are known airbag devices that protect pedestrians and the like by causing them to inflate (see, for example, Patent Document 2).
しかしながら、歩行者等を保護するエアバッグ装置においては、歩行者等は車両に乗車している乗員よりも一般的に大きな衝撃を受けやすいことから、歩行者等が車両に衝突する際の衝撃吸収をより効率的に行うことが望まれていた。 However, in an airbag device that protects a pedestrian or the like, the pedestrian or the like is generally more susceptible to a larger impact than an occupant in the vehicle, so that the shock absorption when the pedestrian or the like collides with the vehicle Was desired to be performed more efficiently.
特に、自転車を含む二輪車の乗員が車両に衝突する場合には、二輪車と車両との相対速度も速く、互いに危険を察知する時間が少ないことから、十分な回避行動ができないまま衝突してしまう虞があり、二輪車の乗員が車両に衝突する際の衝撃力は大きくなり、歩行者等の傷害低減を図ることが求められている。 In particular, when a pedestrian of a two-wheeled vehicle including a bicycle collides with a vehicle, the relative speed between the two-wheeled vehicle and the vehicle is high, and there is little time to detect each other's danger, so there is a risk of collision without sufficient avoidance action. Therefore, the impact force when a occupant of a two-wheeled vehicle collides with a vehicle becomes large, and it is required to reduce injuries to pedestrians and the like.
そこで、大きな衝撃力を吸収するために、車両前面に大きなエアバッグ装置を設けることが考えられる。
しかし、エアバッグの袋体を大きくすると、衝撃吸収能力は向上するが、歩行者等とエアバッグの接触による袋体が、内部のガスを中心とした無限軌道のように回転し、歩行者等を車両に対し滑らせる可能性がある。
この場合、歩行者等と車両の相対変位をエアバッグが吸収しきれず、車両から跳ね落とされ、歩行者等と路面などとの二次衝突を引き起こすことになる。
Therefore, in order to absorb a large impact force, it is conceivable to provide a large airbag device on the front surface of the vehicle.
However, if the bag body of the airbag is enlarged, the shock absorption capacity is improved, but the bag body due to the contact between the pedestrian and the airbag rotates like an endless track centered on the gas inside, and the pedestrian etc. May slip against the vehicle.
In this case, the airbag cannot absorb the relative displacement between the pedestrian and the vehicle and is bounced off the vehicle, causing a secondary collision between the pedestrian and the road surface.
本発明は、上記課題を解決するものであり、歩行者等が車両に衝突する際のエアバッグによる滑りを抑止すると共に、衝撃吸収自体をより効率的に行うことができるエアバッグ装置を提供することを目的とする。 The present invention solves the above problems, and provides an airbag device capable of suppressing slipping due to an airbag when a pedestrian or the like collides with a vehicle and more efficiently absorbing shock. The purpose is.
上記課題を解決するため、本発明は、車両の外側に展開して膨張するエアバッグと、前記エアバッグの内部に膨張ガスを供給するインフレータとを備えたエアバッグ装置において、前記エアバッグの内部には、前記インフレータから供給される前記膨張ガスの熱により変形する変形部材を備えたことを特徴とする。 In order to solve the above problems, the present invention relates to an airbag device including an airbag that expands to the outside of a vehicle and expands, and an inflator that supplies an expansion gas to the inside of the airbag. Is provided with a deformable member that is deformed by the heat of the expansion gas supplied from the inflator.
本発明によれば、歩行者等を保護するエアバッグ装置において、歩行者等が車両に衝突する際のエアバッグによる滑りを抑止すると共に、衝撃吸収自体をより効率的に行うことができる。 According to the present invention, in an airbag device that protects a pedestrian or the like, slippage due to the airbag when the pedestrian or the like collides with a vehicle can be suppressed, and shock absorption itself can be performed more efficiently.
本発明は、車両の前面側に展開するエアバッグ装置であって、車両への衝突を保護する保護対象者である歩行者等に対して傷害低減を図るためのエアバッグ装置である。
以下、本発明の実施形態のエアバッグ装置を、図１〜図６に基づいて説明する。
The present invention is an airbag device deployed on the front side of a vehicle, and is an airbag device for reducing injuries to a pedestrian or the like who is a protected person who protects a collision with a vehicle.
Hereinafter, the airbag device according to the embodiment of the present invention will be described with reference to FIGS. 1 to 6.
図１は、エアバッグ装置Ｅを備えた車両１の斜視図であり、図２は、エアバッグ装置Ｅにおけるエアバッグが展開しているときの車両１の側面図である。 FIG. 1 is a perspective view of the vehicle 1 provided with the airbag device E, and FIG. 2 is a side view of the vehicle 1 when the airbag in the airbag device E is deployed.
図１及び図２に示すように、エアバッグ装置Ｅを備えた車両１は、車両１の前端部にフロントバンパ２、フロントバンパ２の上方かつ後方側にボンネット３、ボンネット３の側方側にフロントフェンダ４、ボンネット３の後方側にフロントガラス５、フロントガラス５の両側縁にフロントピラー６、車両１の天井部にルーフ７、車両１の側面部にサイドドア８、サイドドア８の上方にサイドミラー９等を外部構造として構成している。 As shown in FIGS. 1 and 2, the vehicle 1 provided with the airbag device E has a front bumper 2 at the front end of the vehicle 1, a bonnet 3 above and behind the front bumper 2, and a lateral side of the bonnet 3. The front fender 4, the windshield 5 on the rear side of the bonnet 3, the front pillars 6 on both sides of the windshield 5, the roof 7 on the ceiling of the vehicle 1, the side doors 8 on the side of the vehicle 1, and above the side doors 8. The side mirror 9 and the like are configured as an external structure.
また、フロントバンパ２の上方には、ボンネット３の内部に空気を取り込むためのフロントグリル１０と、装飾性のあるエンブレム１１が設けられている。 Further, above the front bumper 2, a front grill 10 for taking in air inside the bonnet 3 and a decorative emblem 11 are provided.
フロントバンパ２の内部（後方側）には、エアバッグ装置Ｅが設けられており、エアバッグ１００が折り畳まれて格納されている。なお、エアバッグ装置Ｅは、フロントバンパ２の内部ではなく、フロントグリル１０の内部（後方側）に設けてもよい。 An airbag device E is provided inside (rear side) of the front bumper 2, and the airbag 100 is folded and stored. The airbag device E may be provided inside the front grill 10 (rear side) instead of inside the front bumper 2.
エアバッグ装置Ｅは、ナイロン等の合成繊維布の基布で構成されたエアバッグ１００と、エアバッグ１００の内部に膨張ガスを供給するインフレータ（図示せず）とを備えて構成されている。 The airbag device E is configured to include an airbag 100 made of a base cloth of a synthetic fiber cloth such as nylon, and an inflator (not shown) that supplies an expansion gas inside the airbag 100.
また、エアバッグ装置Ｅは、保護対象者が車両１に衝突することを事前に検知すると、インフレータを作動させて、エアバッグ１００の内部に膨張ガスを供給し、エアバッグ１００を膨張させる。このとき、膨張したエアバッグ１００の圧力により、フロントバンパ２が取り外されることになる。 Further, when the airbag device E detects in advance that the protected person collides with the vehicle 1, the airbag device E operates an inflator to supply an expansion gas to the inside of the airbag 100 to inflate the airbag 100. At this time, the front bumper 2 is removed due to the pressure of the inflated airbag 100.
そして、図２に示すように、エアバッグ装置Ｅにおけるエアバッグ１００は、フロントバンパ２から車両１の前面側に展開して膨張することになる。 Then, as shown in FIG. 2, the airbag 100 in the airbag device E expands from the front bumper 2 to the front side of the vehicle 1 and expands.
このエアバッグ１００の内部には、インフレータから供給される膨張ガスの熱により変形する変形部材１２０が設けられている。 Inside the airbag 100, a deforming member 120 that is deformed by the heat of the expansion gas supplied from the inflator is provided.
変形部材１２０は、ポリスチレン、ポリエステル、ポリ塩化ビニル等の膨張ガスの熱により収縮する熱収縮部材で構成されている。
なお、変形部材１２０は、ポリプロピレン、炭酸水素ナトリウム、炭酸アンモニウム、ジアゾアミノベンゼン、ジニトロソペンタメチレンテトラミン等の発泡剤を混入させて膨張ガスの熱により膨張する熱膨張部材で構成してもよい。
The deformable member 120 is composed of a heat-shrinkable member that shrinks due to the heat of an expansion gas such as polystyrene, polyester, or polyvinyl chloride.
The deformable member 120 may be composed of a thermal expansion member that expands by the heat of an expansion gas by mixing a foaming agent such as polypropylene, sodium hydrogen carbonate, ammonium carbonate, diazoaminobenzene, or dinitrosopentamethylene tetramine.
また、エアバッグ１００は、エアバッグ１００の外部と連通し開孔された排出口１１１を有しており、排出口１１１からエアバッグ１００に供給された膨張ガスが排出されることになる。 Further, the airbag 100 has a discharge port 111 that is open to communicate with the outside of the airbag 100, and the expansion gas supplied to the airbag 100 is discharged from the discharge port 111.
次に、エアバッグ１００の内部構成について説明する。 Next, the internal configuration of the airbag 100 will be described.
＜実施形態１＞
図３は、実施形態１のエアバッグ１００を示す説明図である。
<Embodiment 1>
FIG. 3 is an explanatory view showing the airbag 100 of the first embodiment.
図３（ａ）は、車両１の正面視におけるエアバッグ１００の正面図であり、図３（ｂ）は、車両１の前後方向を断面方向とし、変形部材１２０が収縮する前のエアバッグ１００の断面概念図であり、図３（ｃ）は、車両１の前後方向を断面方向とし、変形部材１２０が収縮した後のエアバッグ１００の断面概念図である。 FIG. 3A is a front view of the airbag 100 in a front view of the vehicle 1, and FIG. 3B is a cross-sectional direction of the vehicle 1 in the front-rear direction, and the airbag 100 before the deforming member 120 contracts. 3 (c) is a cross-sectional conceptual diagram of the airbag 100 after the deforming member 120 has contracted, with the front-rear direction of the vehicle 1 as the cross-sectional direction.
図３（ａ）に示すように、変形部材１２０は、車両１の正面視においては、エアバッグ１００の中央部の内壁に設けられている。 As shown in FIG. 3A, the deforming member 120 is provided on the inner wall of the central portion of the airbag 100 in the front view of the vehicle 1.
また、図３（ｂ）に示すように、変形部材１２０は、紐状に形成されており、一端がエアバッグ１００の前端部の内壁に連結されている。なお、図３（ｂ）に示す状態は、エアバッグ１００の膨張が完了する前の状態であって、変形部材１２０が収縮する前の断面概念図であるが、実際にはエアバッグ１００が膨張し始めたときには、変形部材１２０は収縮を開始している。 Further, as shown in FIG. 3B, the deformable member 120 is formed in a string shape, and one end thereof is connected to the inner wall of the front end portion of the airbag 100. The state shown in FIG. 3B is a cross-sectional conceptual diagram before the expansion of the airbag 100 is completed and before the deforming member 120 contracts, but the airbag 100 actually expands. When it starts to shrink, the deforming member 120 has started to contract.
インフレータからエアバッグ１００の内部に膨張ガスが供給されると、図３（ｃ）に示すように、変形部材１２０は、膨張ガスの熱によりエアバッグ１００の内壁側に向かってボール状に収縮する。 When the expansion gas is supplied from the inflator to the inside of the airbag 100, the deforming member 120 contracts in a ball shape toward the inner wall side of the airbag 100 due to the heat of the expansion gas, as shown in FIG. 3C. ..
また、インフレータから供給される膨張ガスは、供給口１０１を介してエアバッグ１００に供給されるものの、エアバッグ１００の下方かつ後方側には、排出口１１１が設けられている。 Further, although the expansion gas supplied from the inflator is supplied to the airbag 100 through the supply port 101, a discharge port 111 is provided below and behind the airbag 100.
このため、エアバッグ１００に供給された膨張ガスは、排出口１１１からエアバッグ１００の外部に排出されることになり、膨張したエアバッグ１００の形状は、保護対象者との衝突により変形可能になる。 Therefore, the expanded gas supplied to the airbag 100 is discharged to the outside of the airbag 100 from the discharge port 111, and the shape of the expanded airbag 100 can be deformed by a collision with the protected person. Become.
後述するように、膨張したエアバッグ１００の形状が保護対象者との衝突により変形可能になると、エアバッグ１００の内部では、ボール状に収縮した変形部材１２０がエアバッグ１００の内壁と擦れることになり、また変形部材同士が擦れたり、絡み合ったりすることで、大きな摩擦力が発生し、保護対象者が車両１に衝突する際のエアバッグ１００による滑りを抑止すると共に、衝撃吸収自体をより効率的に行うことができる。 As will be described later, when the shape of the inflated airbag 100 becomes deformable due to a collision with the protected person, the deformed member 120 contracted in a ball shape rubs against the inner wall of the airbag 100 inside the airbag 100. In addition, when the deforming members rub against each other or become entangled with each other, a large frictional force is generated to prevent the person to be protected from slipping due to the airbag 100 when colliding with the vehicle 1, and the shock absorption itself is made more efficient. Can be done
また、変形部材１２０が設けられたエアバッグ１００の中央部かつ前端部は、保護対象者が接触しやすいエアバッグ１００の部位であることから、変形部材１２０による摩擦力をより効率的に発生させることができる。 Further, since the central portion and the front end portion of the airbag 100 provided with the deformable member 120 are the portions of the airbag 100 that the person to be protected easily contacts, the frictional force generated by the deformable member 120 is generated more efficiently. be able to.
なお、実施形態１においては、エアバッグ１００の中央部かつ前端部の内壁に変形部材１２０が連結されるように構成したが、エアバッグ１００の略全域の内壁に変形部材１２０が連結されるように構成してもよい。また、車両の側面視において、外側エアバッグ１１０及び内側エアバッグ１２０の下方側にある下方部を除いた特定部に取り付けるように構成してもよい。 In the first embodiment, the deformable member 120 is connected to the inner wall of the central portion and the front end portion of the airbag 100, but the deformable member 120 is connected to the inner wall of substantially the entire area of the airbag 100. It may be configured as. Further, in the side view of the vehicle, it may be configured to be attached to a specific portion excluding the lower portion on the lower side of the outer airbag 110 and the inner airbag 120.
＜実施形態２＞
図４は、実施形態２のエアバッグ１００を示す説明図であり、変形部材１２０をエアバッグ１００の内壁に連結させるのではなく、膨張ガスの熱により収縮する変形部材１３０を、膨張ガスが供給される供給口１０１に設けたことの一例である。
<Embodiment 2>
FIG. 4 is an explanatory view showing the airbag 100 of the second embodiment, in which the expansion gas supplies the deformation member 130 that contracts due to the heat of the expansion gas instead of connecting the deformation member 120 to the inner wall of the airbag 100. This is an example of the provision in the supply port 101 to be provided.
図４は、車両１の前後方向を断面方向としたエアバッグ１００の断面概念図であり、図４（ａ）〜（ｄ）において、変形部材１３０とエアバッグ１００の状態を時系列的に示している。 FIG. 4 is a cross-sectional conceptual diagram of the airbag 100 with the front-rear direction of the vehicle 1 as the cross-sectional direction, and in FIGS. 4A to 4D, the states of the deformable member 130 and the airbag 100 are shown in chronological order. ing.
図４（ａ）に示すように、変形部材１３０は、膨張ガスが供給される供給口１０１の近傍に設けられている。 As shown in FIG. 4A, the deforming member 130 is provided in the vicinity of the supply port 101 to which the expansion gas is supplied.
変形部材１３０は、短冊状の変形本体部１３１と、供給口１０１に接続される細い紐状の連結紐１３２とから構成されている。 The deforming member 130 is composed of a strip-shaped deforming main body 131 and a thin string-shaped connecting string 132 connected to the supply port 101.
変形本体部１３１は、図４（ａ）に示すように、供給口１０１から膨張ガスが供給され始めると、膨張ガスの風圧による力を受けて、エアバッグ１００の内部で広がることになる。 As shown in FIG. 4A, when the expansion gas starts to be supplied from the supply port 101, the deformed main body 131 receives the force of the wind pressure of the expansion gas and expands inside the airbag 100.
そして、図４（ｂ）に示すように、供給口１０１から膨張ガスが所定の量が供給されて、エアバッグ１００の内部温度が上昇していくと、連結紐１３２が風圧及び熱により切断され、変形本体部１３１は、エアバッグ１００の内部で飛散することになる。 Then, as shown in FIG. 4B, when a predetermined amount of expansion gas is supplied from the supply port 101 and the internal temperature of the airbag 100 rises, the connecting string 132 is cut by wind pressure and heat. , The deformed main body 131 will be scattered inside the airbag 100.
その後、図４（ｃ）に示すように、変形本体部１３１は、エアバッグ１００の内壁に融着することになる。 After that, as shown in FIG. 4C, the deformed main body 131 is fused to the inner wall of the airbag 100.
最終的には、図４（ｄ）に示すように、変形本体部１３１は、エアバッグ１００の内壁で膨張ガスの熱により収縮が進み、例えば縮れた紐状の、表面に突起の多いボール状になる。 Finally, as shown in FIG. 4D, the deformed main body 131 is contracted by the heat of the expanding gas on the inner wall of the airbag 100, and is, for example, a crimped string-like ball with many protrusions on the surface. become.
実施形態２においても、膨張したエアバッグ１００の形状が保護対象者との衝突により変形可能になると、エアバッグ１００の内部では、ボール状に収縮した変形本体部１３１がエアバッグ１００の内壁と擦れることになり、大きな摩擦力が発生し、保護対象者が車両１に衝突する際のエアバッグ１００による滑りを抑止すると共に、衝撃吸収自体をより効率的に行うことができる。 Also in the second embodiment, when the shape of the inflated airbag 100 becomes deformable due to a collision with the protected person, the deformed main body 131 contracted in a ball shape rubs against the inner wall of the airbag 100 inside the airbag 100. As a result, a large frictional force is generated, and slipping by the airbag 100 when the protected person collides with the vehicle 1 can be suppressed, and the shock absorption itself can be performed more efficiently.
なお、実施形態２においては、変形部材１３０を、短冊状の変形本体部１３１と細い紐状の連結紐１３２とで構成したが、供給口１０１に接続される連結紐１３２を有さずに、球体状、平板状または円盤状の変形本体部１３１のみから構成してもよい。ただし、変形本体部１３１は、供給口１０１から供給される膨張ガスの風圧による力を受ける風受部を有していることが望ましい。 In the second embodiment, the deforming member 130 is composed of the strip-shaped deforming main body 131 and the thin string-shaped connecting string 132, but does not have the connecting string 132 connected to the supply port 101. It may be composed of only a spherical, flat plate or disk-shaped deformed main body 131. However, it is desirable that the deformed main body 131 has a wind receiving portion that receives a force due to the wind pressure of the expansion gas supplied from the supply port 101.
また、実施形態２においては、変形部材１３０が供給口１０１から膨張ガスが供給され始めた時に融着しないように、収縮温度または熱膨温度が、供給口１０１から膨張ガスが供給され始めた時のエアバッグ１００の内部温度よりも高いことが望ましい。 Further, in the second embodiment, when the contraction temperature or the thermal expansion temperature starts to be supplied from the supply port 101 so that the deforming member 130 does not fuse when the expansion gas starts to be supplied from the supply port 101. It is desirable that the temperature is higher than the internal temperature of the airbag 100.
＜エアバッグの変形遷移＞
以上の実施形態１及び２のエアバッグ１００により、保護対象者が車両１に衝突する際の衝撃吸収をより効率的に行うことができる仕組みについて、図５を用いて説明する。
<Airbag deformation transition>
The mechanism by which the airbag 100 of the above-described first and second embodiments can more efficiently absorb the shock when the protected person collides with the vehicle 1 will be described with reference to FIG.
図５は、保護対象者がエアバッグ１００に衝突したときのエアバッグ１００の変形遷移を示す模式図である。 FIG. 5 is a schematic view showing the deformation transition of the airbag 100 when the protected person collides with the airbag 100.
図５（ａ）に示すように、保護対象者が車両１に衝突するときには、保護対象者がまずエアバッグ１００に衝突し、保護対象者からの衝撃力によりエアバッグ１００の形状が変形する。 As shown in FIG. 5A, when the protected person collides with the vehicle 1, the protected person first collides with the airbag 100, and the shape of the airbag 100 is deformed by the impact force from the protected person.
このとき、エアバッグ１００の内壁には、ボール状に収縮した変形部材１２０が形成されていることになり、変形部材１２０がエアバッグ１００の内壁と擦れることになる。
そして、変形部材１２０がエアバッグ１００の内壁と擦れると、図５（ａ）、（ｂ）に示すように、エアバッグ１００の内部では、変形部材１２０によって大きな摩擦力が発生することになる。
At this time, a ball-shaped contracted deforming member 120 is formed on the inner wall of the airbag 100, and the deforming member 120 rubs against the inner wall of the airbag 100.
Then, when the deforming member 120 rubs against the inner wall of the airbag 100, a large frictional force is generated by the deforming member 120 inside the airbag 100 as shown in FIGS. 5A and 5B.
これにより、保護対象者が車両１に衝突する際のエアバッグ１００による滑りを抑止すると共に、衝撃吸収自体をより効率的に行うことができ、保護対象者の傷害低減を図ることができる。 As a result, slippage by the airbag 100 when the protected person collides with the vehicle 1 can be suppressed, shock absorption itself can be performed more efficiently, and injury of the protected person can be reduced.
＜その他の変形例＞
上記実施形態１及び２においては、車両１の前面側に展開して膨張するエアバッグは、エアバッグの内部で大きな摩擦力が発生するエアバッグ１００の１つのみであったが、他のエアバッグを設けて構成してもよい。
<Other variants>
In the first and second embodiments, the airbag that expands and expands toward the front surface of the vehicle 1 is only one of the airbags 100 that generates a large frictional force inside the airbag, but other airbags. A bag may be provided and configured.
例えば、図６に示すように、車両１の前面側であって、エアバッグ１００の下方側に、薄型の半楕円状または矩形状のエアバッグ２００を展開させてもよい。 For example, as shown in FIG. 6, a thin semi-elliptical or rectangular airbag 200 may be deployed on the front side of the vehicle 1 and below the airbag 100.
また、エアバッグ２００の前端部は、車両の前後方向に対して、エアバッグ１００の前端部よりも前面側に展開される。さらには、エアバッグ２００の上端部は、保護対象者の膝下以下となる高さで展開される。これにより、エアバッグ２００は、保護対象者の足払いの役割を果たすことができる。 Further, the front end portion of the airbag 200 is deployed on the front side of the front end portion of the airbag 100 in the front-rear direction of the vehicle. Further, the upper end portion of the airbag 200 is deployed at a height below the knee of the protected person. As a result, the airbag 200 can serve as a foot sweep for the protected person.
そして、エアバッグ１００に対してエアバッグ２００を更に備えることにより、まずエアバッグ２００により保護対象者に足払いを行い、保護対象者をエアバッグ１００側に倒れさせ、その後にエアバッグ１００の内部の摩擦力により、保護対象者への衝撃力の衝撃吸収をより効率的に行うことができる。 Then, by further providing the airbag 200 with respect to the airbag 100, the airbag 200 first pays a foot to the protected person, causes the protected person to fall toward the airbag 100, and then the inside of the airbag 100. Due to the frictional force of, the impact absorption of the impact force to the protected person can be performed more efficiently.
保護対象者の衝突態様は様々であるが、足払いの役割を果たすエアバッグ２００により、保護対象者への衝突態様をエアバッグ１００側に倒れさせる衝突態様へ誘導させることができ、事前に想定した衝突態様により衝撃吸収を行い易くすることができる。 There are various collision modes of the protected person, but the airbag 200, which plays the role of a foot sweep, can guide the collision mode to the protected person to the collision mode in which the airbag 100 side falls, and is assumed in advance. It is possible to facilitate shock absorption depending on the collision mode.
以上のように、本発明のエアバッグ装置Ｅは、保護対象者が車両１に衝突する際のエアバッグ１００による滑りを抑止すると共に、衝撃吸収自体をより効率的に行うことができ、保護対象者の傷害低減を図ることができる。 As described above, the airbag device E of the present invention can prevent the person to be protected from slipping due to the airbag 100 when colliding with the vehicle 1, and can absorb the shock more efficiently, and is the object to be protected. It is possible to reduce personal injuries.
１：車両、２：フロントバンパ、３：ボンネット、４：フロントフェンダ、５：フロントガラス、６：フロントピラー、７：ルーフ、８：サイドドア、９：サイドミラー、１０：フロントグリル、１１：エンブレム、１００：エアバッグ、１０１：供給口、１１１：排出口、１２０：変形部材、１３０：変形部材、１３１：変形本体部、１３２：連結紐 1: Vehicle, 2: Front bumper, 3: Bonnet, 4: Front fender, 5: Windshield, 6: Front pillar, 7: Roof, 8: Side door, 9: Side mirror, 10: Front grill, 11: Emblem , 100: Airbag, 101: Supply port, 111: Discharge port, 120: Deformed member, 130: Deformed member, 131: Deformed main body, 132: Connecting string
Claims (7)
前記エアバッグの内部には、
前記インフレータから供給される前記膨張ガスの熱により変形する変形部材を備えた、
ことを特徴とするエアバッグ装置。 In an airbag device including an airbag that expands and expands to the outside of the vehicle and an inflator that supplies expansion gas to the inside of the airbag.
Inside the airbag,
A deformable member that is deformed by the heat of the expansion gas supplied from the inflator.
An airbag device characterized by that.
前記インフレータから供給される前記膨張ガスの熱により収縮する、
ことを特徴とする請求項１に記載のエアバッグ装置。 The deforming member is
Shrinks due to the heat of the expansion gas supplied from the inflator.
The airbag device according to claim 1.
前記エアバッグの内壁に連結されている、
ことを特徴とする請求項１または２に記載のエアバッグ装置。 The deforming member is
Connected to the inner wall of the airbag,
The airbag device according to claim 1 or 2.
前記エアバッグの前端部の内壁に連結されている、
ことを特徴とする請求項１〜３のいずれかに記載のエアバッグ装置。 The deforming member is
Connected to the inner wall of the front end of the airbag,
The airbag device according to any one of claims 1 to 3.
車両への衝突を保護する保護対象者が接触しやすい前記エアバッグの保護接触部であって、当該保護接触部の内壁に連結されている、
ことを特徴とする請求項１〜３のいずれかに記載のエアバッグ装置。 The deforming member is
A protective contact portion of the airbag that is easily contacted by a protected person who protects against a collision with a vehicle, and is connected to an inner wall of the protective contact portion.
The airbag device according to any one of claims 1 to 3.
紐状に形成され、一端が前記エアバッグの内壁に連結されている、
ことを特徴とする請求項１〜５のいずれかに記載のエアバッグ装置。 The deforming member is
It is formed in a string shape, and one end is connected to the inner wall of the airbag.
The airbag device according to any one of claims 1 to 5.
前記膨張ガスを前記エアバッグの内部に供給するための供給口の近傍に配置されている、
ことを特徴とする請求項１または２に記載のエアバッグ装置。
The deforming member is
It is arranged in the vicinity of a supply port for supplying the expansion gas to the inside of the airbag.
The airbag device according to claim 1 or 2.
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| CN201911334927.8A CN111746458A (en) | 2019-03-29 | 2019-12-23 | Airbag device |
| US16/752,813 US11173869B2 (en) | 2019-03-29 | 2020-01-27 | Airbag device |
| DE102020201036.6A DE102020201036A1 (en) | 2019-03-29 | 2020-01-29 | Airbag device |
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| US11242028B2 (en) * | 2019-12-27 | 2022-02-08 | Subaru Corporation | Outside protection apparatus for vehicle |
| KR20220052170A (en) * | 2020-10-20 | 2022-04-27 | 현대모비스 주식회사 | External air bag device |
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| DE202005001000U1 (en) * | 2005-01-21 | 2005-06-02 | Trw Automotive Safety Systems Gmbh | Airbag module for a vehicle occupant restraint device |
| US8033571B2 (en) * | 2005-05-24 | 2011-10-11 | The Invention Science Fund I, Llc | Energy dissipative cushioning elements |
| KR101047561B1 (en) * | 2008-09-09 | 2011-07-07 | 현대자동차주식회사 | Vehicle exterior airbag device |
| JP2010235007A (en) | 2009-03-31 | 2010-10-21 | Toyoda Gosei Co Ltd | Airbag device |
| DE102012206467A1 (en) | 2011-04-22 | 2012-10-25 | Tk Holdings Inc. | exterior airbag |
| KR101327050B1 (en) * | 2011-12-06 | 2013-11-07 | 기아자동차주식회사 | External airbag structure of vehicle |
| DE102012018674A1 (en) * | 2012-05-31 | 2013-12-05 | Trw Automotive Gmbh | Actuator and vehicle protection system |
| US10434973B2 (en) * | 2017-01-18 | 2019-10-08 | Toyota Motor Engineering & Manufacturing North America, Inc. | Automatically adjustable airbag system |
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| JP2010111375A (en) * | 2008-11-10 | 2010-05-20 | Hyundai Motor Co Ltd | Outer airbag cushion for vehicle and device therefor |
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